Extruding machine



Dec. 13, 1927. 1,652,189

, P. E. WELTON EXTRUDING MACHINE Filed Oct. 30. 192.6 "l sheetsiheet 1 P. E. WELTON EXTRUDING MACHINE Filed Oct. I S50, 1926 '7 Sheets-Sheet 2 Dec. 13, 1927. 1,652,189

P. E. WELTON EXTRUDING MACHINE Filed 001;- 30. 1926 Dec. 13, 1927.

7 Sheets-Sheet 4 N. N a

Dec. 13, 1927.

- P. E. WELTON EXTRUDING MACHINE Filed Oct. 30, 1926 7 Sheets-Sheet 5 Fen-{15 Dec. 13,1927. 1,652,189

P. E. WELTON EXTRUDING MACHINE Filed OQG- 30, 1925 7 Sheets-Sheet 6 IOI Fl 6:. I5

Patented Dec. 13, 1927.

PARK E. WELTON, F CLEVELAND, OHIO.

EXTR'Q'DIN G MACHINE.

Application filed October 30, 1926. Serial No. 145,106.

A machine heretofore used in the manufacture of fuel briquets embodies a single extruding member disposed in a horizontal plane. This machine is necessarily quite limited in so far as quantity of production is concerned, and is not adapted to be enlarged by the addition of other extruding members for the reason that the power required to material being extruded. Moreover satis factory lubrication of the operating mechanism has been difiicult to maintain, due to the fact that the operating parts have been subjected to the presence of abrasive material.

One of the objects of the present invention is to make a machine which will permit the extrusion of material such as briquets or cores continuously and on a production basis without requiring the expenditure of excessive power to actuate the machine. In this connection my invention contemplates a machine which will permit such protection without subjecting the operating parts to the presence of abrasive material and therefore without subjecting them to excessive wear. In addition, I so arrange the driving mechanism for the extruding members that oil under pressure may be' satisfactorily used for lubrication purposes.

Further objects of my invention are to provide for adjustment of the forming die with relation to the extruding members, so as to permit inspection or replacement of any one member or part thereof, without dis turbing the relationship between the remainin members and the associated dies.

Inasmuch asone of the parts subjected to the most wear is the extruding member, particularly the tip thereof, I contemplate the provision of means for enabling the tip-to be replaced without necessitating replacement of the entire extruding member. Moreover, I so construct the mechanism that the tip can be replaced, while the extruding member is operatively connected to the driving mechanism; I

The preferred apparatus for carrying out my myention is illustrated in the drawings wherem Fig. 1 is a side elevation of a machine embodying my invention, and shows part of the machine broken away to illustrate the interior construction; Fig. 2 is a slde elevation of the machine shown in Fig. 1 wlth the main driving pulley removed; Figs. 3 and 4 are sections taken through the machine on planes indicated-by the correspondingly numbered lines in Fig. 1; Fig. 5 is an enlarged sectional view of the forming apparatus illustrated in Fig. 4; Fig. 6 is a horizontal section taken through the-mach1ne on a plane indicated on the line 6-6 on Fig. 4; Figs. 7 and 8 are enlarged sectional views showing details of construction and are taken on planes indicated by the correspondingly numbered lines in Fig. 6; Fig. 9 and Fig. 10 are horizontal sections taken through the machine on planes indicated by the correspondingl numbered lines in Figs. 4 and 5 respective y; Fig. 11 is an enlarged sectional view through the extruding screw; Figs 12 and 13 are horizontal sections taken on planes indicated by the correspondinglv numbered lines in Fig. 11; Fig. 14 is a horizontal section taken through the machine on the line 1414 on Fig. 4; Fig. 15 is a vertical section taken on the plane indicated by the line 1515 in Fig. 1 1; Fig. 16 is a horizontal section taken: on the plane indicated by the line 1616 in Fig. 2; Fig. 17 is a vertical transverse section taken on a plane indicated by the line 17-17 in Fig. .16; Fig. 18 is a section taken on a plane indicated by the line l818 in Fig. 17, while Fig. 19 is a similar section showing the die actuating cam in a position different from that indicated in Fig. 18, and Fig. 20 is a perspective View of the wedge shaped sleeve which is employed for holding the die in proper relationship and shows part of the sleeve broken awa The machine embodied in my invention, is illustrated in Fig. 1 asjhaving a base 10, up- .on-which a frame 11 is mounted. The frame has a distributing chamber 16 in the upper portion thereof and a mixing chamber 17 beneath the distributing chamber. Moreover, the frame has'an opening 12 at the top which is disposed beneath the discharge end :in material in opposite directions from the center of the machine, as it is received from the source of suppl Beneath the conveyor,

' I provide adjustab e distributing means for controlling the size of the discharge opening from the distributing chamber to the mixing chamber. Within the mixing chamber, I mount a pluralit of extruding screws or worms, and at the ottom of the chamber, I place the extruding dies, and I so taper the sides of the frame that the bottom of the mixin chamber converges to direct the material into the dies. Beneath the dies, I provide means for breaking off the formed material and for conveying it continuously from the machine.

The mechanism illustrated for insuring uniform delivery of the material from the conveyor into the mixing chamber embodies shiftable plates 20, each of which rests upon a laterally-extending flange 21, which forms part of the frame. As shown in Fig. 4 there are two of such flanges which are spaced apart at the innermost ends to provide an o ening 22, extending the entire len th of t e conveyor chamber. The sides of this 0 ening may be varied by shifting the p ates, and in the preferred arrangement, the shifting of each late may be accomplished by means of a land wheel 25, which is attached to a threaded spindle 26, and is operable from a point outside the chamber. Each spindle is threaded to a wall 27 of the conveyor chamber, and is attached at the inner end to a block 28, which in turn, is rigidly! attached by a swivelled connection 29 to the Plate. Adjacent each end of each plate, I have shown a spindle 30, which is in threaded engagement with one of the walls 27 and which is arranged to engage a shoulder 31 on the outer edge of the plate. These spindles function to lock .the plates at the desired angle with reference to the opening 22. By using two pairs of plates with one member of each pair on opposite sides of the delivery opening, and by placing the adjacent ends directly under the center of the conveyor, then itis obvious that the opening may be varied to insure uniform delivery of the material throughout the length of the machine. Sight openings 31 in the frame directly beneath the delivery 0 ening enable the operator to determine the eg'ree of uniformity in distribution.

Directl beneath the opening, between the two cham rs, I mount a V-shaped shield 35, the apex of which extends longitudinall of the machine and is parallel. with the axis of the conveyor shaft 15. Below the shield,

and in close fitting engagement with the sides thereof, is a castin 36, which forms part of a bearing blockin w iich the extruding worms are journalled. This construction revents any of the material from working into the bearings, and at the same time directs it outwardly past agitating and mixing devices where it is thoroughly commingled and prevented from clogging before it reaches the dies.

The extruding members embody a plurality of rotatable helical members 40, which are mounted upon vertical axes in a row extending between the length of the mixing chamber. The members are mounted as closely together as is'practicable. Moreover, the members are journalled in a bearing block, comprising members 36 and 37 which extend the entire length of the chamber and are carried by the respective members 38 and 39, which form part of the frame and also provide walls for the mixing chamber. The bearing block also functions to journal shafts 41 and 42 which carry gears 43 and 44 respectively. These gears mesh alternately with gears 45 for rotating the worms. This arrangement is illustrated in Fig. 10 and is advantageous in that it permits the use of extruding worms, having ri ht-hand threads, with rotation of all in t e same direction. Moreover, it distributes the workin stress on o positesides of the journa block and tierefore aids in permitting the distribution of power in a relatively small space. The construction of the supports for the driving mechanism of the extruding worms permits satisfactory lubrication to be maintained without necessitating stopping of the machine. For example, Fig. 5 shows 0 enin s 8 and 9 which extend entirely t roug the member 37. These openings are arranged to be connected to a suitable source of lubricating sup 1y by means of which oil may be fed un er pressure into all of the spindle bearings and also into the a driving shaft bearings.

Eac

which is preferably tapered from one end to the other and has a shank 46 which is threaded to receive a spindle 47. Moreover, the shank has a non-circular boss 48 which is adapted to fit a corres onding opening in a driving sleeve 49. T e sleeve may be locked to the spindle by securing members 50. Each driving sleeve is shown as having a gear 45 rigidly mounted thereon between the nip r and lower members of the journal bloc Moreover, each sleeve is illustrated as having ball thrust bearings 55 and 56 which may be held in position against the cooperating parts of the journal block by securing members 57. The material may be prevented from working upwardly ,into the bearings by a washer 58 while a cover plate 59, attached to the bearing block funcextruding worm has a helical vane,

tions to hold the washer in position. A shield in the nature of a forked sleeve rojects downwardly from the cover an is rigidly mounted, as by a pin 61, on the shank of the worm.

At the bottom of the mixing chamber, I have shown a die'block 65, which has spaced openings into which individual dies may be placed. In the preferred arrangement each die embodies a lining 66 and a sleeve 67. The lining member 66 may be made either of metal or 'a vulcanized product. The material which I have found to be satisfactory is ahard rubber lining which can be readily removed fromthe sleeve when the sleeve is removed from the die block. The sleeve is taperednear the upper end thereof, asat 68 and is arranged to cooperate with a correspondingly tapered sleeve-like member 70, s own in perspective in Fig. 20. The outer wall of this last mentioned member is cylindrical and is arranged to fit within a cylindrical opening in the die block.

Each member 70 may have laterally extending ears 71, which are arranged to engage studs 72 and to be held thereagainst by the pressure exerted during the forming operation. Securing members 73 function normally to hold the members 70 in position. he securing members 73 are made of some soft metal such as lead, so that the threads will be stripped if the pressure exerted thereon exceeds a predetermined amount. In this way, I prevent damage to the extruding member and provide a comparatively cheap safety device. As shown in Fig. 5, there 1s a slight clearance between the upper end of the member 70 and the sleeve 67. This permits the sleeve to be wedged downwardly against the member 70 by the force of the extruding pressure, and provides a satisfactorv means for holding the die in position and at the same time permits the quick withdrawal thereof for inspection or repair purposes.

The die block, as shown in Figs. 16 and I, 17, is supportedupon cams 80 and 81, which in turn, are supported indirectl by a carrier 82. The cams illustrated are rigidly mounted upon shafts 83 and 84 which are res ectively journaled in blocks 85 and 86. ach block may be suspended by pins 87 and 88 from lugs 89 and 90" which depend from the carrier.

To raise or lower the die block with reference to the carrier, I have shown the 'cam shafts as havin worm wheels 91 and .92, mounted on the respective shafts 83 and 84, and as being in engagement with worms 93 and 94 on a shaft 95. This shaft extends through the frame, and is operable from a point outside the machine as shown at 96 in Fig. 2.

By making the die block adjustable independently of the carrier, I can control the' position of the top of the die with reference to the extruding member in order to suit operating conditions. One extreme position of the cams is illustrated in Fig. 18 and another in Fig. 19, while Fig. 17 shows by broken lines 80 and the relative position of the cams when shifted from the full line position. The adjustability is desired in practice not only for obtaining the proper relationship between the die and the extruding members, but also is helpful in that it permits a slight vibration to be imparted to the die, if necessary, to loosen any material (\ivhich may have become clogged near the The die carrier is also arranged to be re-' moved from the frame so as to render the interior of the mixing chamber accessible, and to this end I have shown the carrier as being .su ported'upon spindles 100, which preferab y are suspended from the frame 39 by pins 101. Each spindle carries a nut 102 in the nature of a worm wheel, which is adapted to be rotated by a worm 103 on a shaft 104, as shown in Fig. 14. There are two such shafts journalled in the carrier with two worms on each shaft. A chain and sprocket connection 105 extends between the shafts for enabling simultaneous rotation to be effected whenever one is actuated. A crank 106 may be attached to one of the shafts outside the frame to eifect such operation.

By making the die block carrier movable with reference to the frame, I can make the lower art of the mixing chamber readily acces'si le to ermit replacement of the extruding members, and by making the die blocks movable with reference to the carrier, I can effect such operation without disturbing the adjustment of the dies when the carrier is brou ht back into position.

After the fbrmed articles are extruded from the dies, then to break them off to the proper lengths, I have shown a device in the nature of a stripping platev 110 which extends substantially the entire length of the machine and is disposed beneath the delivery end of the dies. This plate preferably carried on a rock shaft 11, is

arranged to be tilted to obtain the proper degree of angularity with reference'to the axis of the die for effecting the breakage of the product into the proper lengths. Moreover. since the rock shaft is supported in bearing blocks 112, which in turn are slidably mounted upon member 113, then the plate may be shifted transversely of the machine. In this way, a plate may be readily adjusted while the machine is in operation. The members 113 preferably embody stationary bars which are carried by the frame on o posite'endsthereof, asshown in Fig. 2. oreover, the rock shaft may be tilted as well as moved transversely of .the

machine by the operation of a hand lever 114, one end of which is attached to the rock shaft, and the other end 'of which is operable from a point outside the machine. A segment 115, having a curved slot therein permits the hand lever to be locked for holding the late in the desired position.

l hen the machine is started, it is necessary to provide an abutment against which the material may be packed. A satisfactory way of accomplishing this is to employ an abutment which extends substantially the entire length of the machine, and is carried by spaced members 121 upon the rock shaft 111. A spring 122 normally tends to urge the abutment into engagement with the de ivery ends of the dies, so as to prevent breakage of any of the operating parts during the packing procedure. After the dies have been packed to the desired degree, then the abutment may be withdrawn, and the stripper plate may be adjusted as heretofore described.

Beneath the stripper plate. I have shown a traveling conveyor in the nature of a belt, indicated at 125 which may be driven from any suitable source of power, and may have a width substantially equal to the length of themachine. This belt functions to convey the finished product from the machine in a satisfactory manner.

To insure a thorough mixing of the ingredients and to prevent clogging within the mixing chamber, I employ an agitating device in the nature of spaced fingers, which extend upwardly as at 130, and downwardly as at 131, from a rod 132, which is mounted for reciprocation within the mixing chamber. In the preferred arrangement, there are two such rods, one on each side of the mixing chamber, as shown in Fig. 4. This view also shows the fin ers as extending in close proximity to t e shield 35, and the fin ers 131 in close proximity to the lower wa ls of the mixing chamber. To actuate the a itating fingers, I have shown a yoke 135 w ich operatively engages each rod, and is rigidly attached to a vertically extending shaft 136. The lower end of each shaft carries an arm 137 which has a finger engagin a groove in a cam 138.

n Fig. 9 the cam 138 is shown as being loosely mounted on a shaft 139, but as being rigidly connected to a gear 140 which in turn is arranged to mesh with gear 141 on a lay shaft 142. This lay shaft is operated by a connection between gear 143 and pinion 144 which are respectively rigidly mounted on the lay shaft and driving s aft. The ratio of the gearin is such that the speed of the cam is materia ly reduced from that of the driving shaft.

There are two such drivin shafts, one indicated at 139 on one side 0 the machine and the other indicated at 149 on the opposite side of the machine, as illustrated in Fig. 4. The shaft 149 is arranged to be driven by a pulley wheel 150 which is actuated from a source of power (not shown). The shaft 149 is operativel connected to the shaft 139 b gears 151 an 152 at one end of the mac ine. These gears being the same size, cause the shafts to be actuated at the same speed but in opposite directions.

Further agitation and mixing of the material is effected by means of rotatable mixing members which are shown as squared shafts adjacent the bottom of the mixing chambers and on op osite sides of the extruding members. ach side of the shaft, as shown, has a plate attached thereto which extends the entire length of the mixing chamber. The edge of each plate overhangs the-edge of an ad acent plate and is rotated in a direction to force material into the extrudin worms. The shaft 161 may be operative ly connected to the shaft 149 b gears 165 and 166, while the shaft 160 may connected to ,shaft 139 by gears 167 and 168.

The shafts 41 and 42 which are arran ed to actuate the extruding worms are a so adapted to be driven from the shaft 139. To this end I have shown gears 170 and 171 at one end of the machine which connect the shaft 139 to the shaft 42, and I have shown gears 172 and 17 3 at the opposite end of the machine for connecting the shafts 149 with shaft 41. Shaft 149 as heretofore described is operatively connected to shaft 139 by gears 151 and 152 respectively.

The conveyor on shaft 15 is illustrated 1n Fig. 1 as being driven by a pulle 175 from a source of power (not shown). prefer to emplo an independent driving connection in or er to control the feeding s eed lndependently of the extruding spee in order to compensate for varying conditions of the material.

Further provision for continuous operation without clogging of the e uipment 1neludes the use of a shield which is rigidly fastened as by pin 61 to the shank of each extruding worm. This shield embodies a hollow member having spaced prongs 181,

each of w ich may be flared outwardly at the tip. hese prongs cooperate with the mixin devices indicated at 160 and 161 to keep t e material in motion and to feed it into the dies.

One of the arts which is subjected to the most wear is the tip of each extruding worm. Ordinarily the worms are made of metal in order to withstand the workin stress. Metal however, of the character use for the construction of the extrudin member wears uite rapidly at the tip. I ave found that t e substitution of a composition rubber tip prolongs the life of the members to an appreciable de ree, and that replacement of the tip can readily accomplished, without necessitating removal of the extruding members from the machine. of which the tip is made is suificiently hard to withstand mechanical stress and yet is somewhat flexible. In fact, it might be termed a semi-hard rubber. Moreover, the

cost of a removable tip is inexpensive as compared to the cost of the entire extruding member. The tip 189 as shown in Fig. 11 may be held in place by the core piece 190, which is threaded into the end of the extruding member.

The operation of a machine made in accordance with my invention is as follows: The material is fed from a bin into the conveyor chamber 16 and is then passed between plates 20 which previously have been set to provide uniform distribution throughout the length of the machine. The material then passes into the mixing chamber where it is a itated by fingers 130 and 131, and also by t e members 160 and 161. The material then enters the dies and is forced downwardly into cylindrical columns. When operation of the machine is begun, the abutment 120 is placed beneath the row of dies to provide a closure against which the materlal may be packed. After the dies are packed, then the rock shaft upon which the abutment is fastened is moved with reference to the frame until the stripper plate 110 will cause the extruding material to be broken into the desired len ths. The product will then dro upon t e conveyor belt and be delivered rom the machine.

. My invention when used for the manufacture of fuel briquets permits the formation of the product in a satisfactory way, without requlring material to be maintained in an objectionable wet condition. .Moreover, the pinions for the rotatable mechanism may be adequately lubricated and main-' tained free from exposure from the comminuted material. 4

A further important advantage of the present invention is the fact that a lar e number of briquets or cores may be made continuously in a single machine, with a relatively small amount of power being re- %uired to actuate the extruding) apparatus.

y making the die block mova le with the carrier, then the entire set of dies may be removed for ena'blin the interior parts to be inspected or repaired, and then replaced in the same previous posltion. Moreover,

" extrudin by making. the die block movable independently of the carrier I can remove one die without disturbing the position of the remaining dies.

I claim:

1. In a machine of the character described, the combination with a vertically disposed member, of a die adjacent the bottom portion of the member and cooperating therewith, a horizontally disposed conveyor The material above the extruding member, means beneath the conveyor for distributing material uniformly to the extruding member and a rotary mixing device disposed adjacent the entrance to the die.

2. In combination, a frame having a mixing chamber therein, a row of vertically disposed extruding members mounted for rotation within the chamber, means above the mixing chamber for distributing material uniformly along the row, and means on opposite sides of the row within the mixing chamber for mixing and agitating the material, and a die block forming part of a closure for the bottom of the mlxing chamber, said block having dies therein cooperating with said extrudin members.

3. In combination, a rame having a hot low mixing chamber therein, a row of vertically disposed extruding members suspended for rotation within said chamber, mechanism for rotating said members in the same direction, means enclosing the drivin mechanism, said means including a shiel which functions to deflect material to opposite sides of the mixing chamber, and a die block forming part of a closure for the bottom of the mixing chamber, said block having dies cooperating with said members.

4. In combination, a frame having a receiving chamber above the mixing chamber, a screw conveyor within the receiving chamber, a plurality of vertically disposed extruding members within the mixin chamber, cooperating dies associated wlth said members, and shiftable plates carried by the frame and disposed between the receiving and mixing chambers for distributing material uniformly into the mixing chamber.

- veyor having right and left hand flights for conveying material from the mid-portion toward the ends of the receiving chamber, and airs of cooperatin plates carried by the rame, said plates eing adjustableindependently of each other and with relation to the frame for varying the size of the opening between said chambers.

6. The combination of a frame havin a receiving chamber and 'a mixing chamber and having a restricted opening therebetween, means within the receiving chamber for conveying material in a direction longitudinally of the opening, and pairs of in pendently shiftable plates adapted to permit the size of said opening to be selective- 1y varied, each plate having a hand actuated adjusting screw mounted thereon adjacent the mid-portion thereof, each screw having a hand wheel associated therewith outside the frame, and each plate also having threaded spindles cooperating with each end thereof for locking the plate in any desired osition.

7 n a machine of the character described, the combination with a frame having a hollow chamber therein, a row of vertically disposed extruding members positioned within the chamber, means carried by the frame for suspending said members within the chamber, said means providing a journal block for the members, a pair of driving shafts mounted in said block, means operatively connecting said shafts with alternate extruding members, and mechanism for rotat ing said shafts.

8. In combination, a frame having a chamber therein, said chamber having converging side walls, a die block forming part of a closure for the bottom of said chamber, a plurality of vertically disposed extruding members, means rotatably supporting the members within the chamber, a driving shaft j ournalled in said means and eratively connected with alternate extru ing members, said means also providing a thrust bearing block for said extruding members, a die cooperating with each of said members, and means for moving the dies in a vertical direction with relation to the members.

9. In a machine of the character described, the combination with a frame having a mixing chamber therein, of a row of vertically disposed extruding members mounted for rotation Within said chamber, a support extending longitudinally of the chamber and functioning to suspend the extruding members, a pair of driving shafts journalled in said su port, there being one shaft disposed on eac side of said row, gearing operativelyconnecting each shaft with some of said extruding members, said support having a shield carried thereb said shield extending for substantially t e full length of tfhe support and providinga closure there- 10. In a machine of the character described, the combination with a frame hav ing a mixing chamber therein, a row of vertically disposed extruding members mounted for rotation within said chamber, reciprocatin a it'ating devices disposed within the c am r on o posite sides of the extrudin members, an rotatable mixing means adjacent the bottom of the chamber and on each side of theextruding members.

11. In a machine of the character described, the combination with a frame having a chamber therein, of a row of vertically disposed extruding members positioned within the chamber, a bar mounted for reciprocation on each side of the row and within the chamber, spaced fingers extending upwardly and downwardl respectively from each bar, and a rotary eeding device adjacent the bottom of the chamber and on each side of said row, and mechanism for ing passageways for permitting reciprocating the bars and rotating said devices.

12. In combination, a frame having a chamber therein, a vertically disposed extruding member mounted for rotation within said chamber, and a forked-shield carried by the member, the prongs of said shield being flared outwardly adjacent the bottom thereof and functioning to agitate the material as it is being fed into said member.

13.111 a machine of the character described,'the combination with a frame having a chamber therein, of a su port carried by and extending for substantially the full length of the chamber, a row of vertically dis osed extruding members journalled in said support, a driving shaft 'ournalled in the support on each side of sald row, gearing operatively connecting each shaft with some of said extruding members, said support having intercommunicating lubricatubrication of the rotating parts from a point. outside the frame.

14. In a machine of the character dc scribed, the combination with a frame having a chamber therein, a plurality of vertically disposed extrudin members mounted for rotation within said c amber, a die block beneath the chamber and having dies therein cooperating with each of said members, a die block carrier, means for shifting the carrier with relation to the frame, and other means for shifting the die block with relation to the carrier..

15. In a machine of the character described, the combination with a frame havin a chamber therein, of a lurality 0f extru ing members mounted or rotation within said chamber, a die block havin spaced openings, a die removably position in each opening and each cooperating with one of said members, each die being removable from the block independently of the remaining dies, andmeans for moving all of said dies as a unit with reference to the frame.

16. In a machine of p the character described, the combination with a frame having a chamber therein, of a plurality of extrudin members mounted for rotation within sai chamber, a die block disposed beneath the members and having openi therein adapted to align with the axes of tfiz members, t ere being a die awociated with each opening, spaced cams supporting the block, and means for actuating said cams to raise or lower the block with reference to the frame.

17. In a machine of the character described, the combination with a frame having a chamber therein, vertically disposed extruding members mounted for rotation within each chamber, a die block and a carrier providing a closure for the bottom of the chamber, and means for suspending the die block from the frame, said means having mechanism associated therewith for permi-tting vertical movement of the carrier with reference to the frame and said block having dies cooperating with said members.

18. In a machine of the character described, the combination with a frame having a chamber therein, vertically disposed extruding members mounted for rotation within said chamber, adie block and a carrier associated with. the frame and providing a closure for the bottom of said chamber, dies associated with said block and cooperating with the extruding members, means including a worm and worm wheel connection for moving the carrier and block as a unit with reference to the frame,'and

' other means for shifting the die block with extruding members mounted for rotation reference to the carrier. 1

19. In a machine of the character described, the combination with a frame having a chamber therein, of a row of vertically disposed extruding members mounted for rotation within said chamber, a die block associated with the frame beneath the chamber, said block having dies carried thereby and cooperating with said members, said dies being independently removable from the block and means for moving all of said dies as a unit with reference to the frame without moving them with reference to the block.

20. In a machine of the character described, the combination with a frame having a chamber therein, vertically disposed within said chamber and arranged to extrude the material downwardly from the chamber, a die block and a carrier adjacent the bottom of said chamber, spaced threaded spindles suspending the carrier from the frame, means including a worm and worm wheel connection for moving the carrier along said spindles, spaced cams supporting the die block within the carrier, means operable independently of the first mentioned means for actuating the cams to move the die block with reference to the carrier and spaced dies within said block cooperating with said members.

21. Ina machine of the character described, the' combination'with a row of vertically disposed extruding members and cooperating dies, of a yieldable abutment disposed beneath the dies and adapted to close the bottom ends thereof and means for shifting the abutment laterally with reference to the dies after the packing operation is completed.

22. In a machine of the character described, the combination with a frame having a plurality of vertically disposed extruding members mounted in a row therein, a die cooperating with each member, and an adjustable plate mounted for angular and lateral movement with reference to the row of dies, said plate functioning to break the formed material as it is being extruded from the dies.

In testimony whereof, I hereunto afiix my signature.

PARK E. WELTON. 

